Payment Wallet Application

• A payment application with CRUD operations and banking logical operations while maintaining the balance and account sections of the customers while providing the transactions.

• An developement of RESTful API for an Online Payment Wallet application. This API performs all the fundamental CRUD operations of any Online Wallet Banking platform with user validation at every step.

Teach Stacks Implemented:

• Java
• Spring
• Spring Boot JPA
• Hibernate
• MySQL
• Swagger(UI)
• Lombok

Problem Statement:-

• To create payment wallet application for XYZ bank.
• Customers will be able to park their money in the wallet.
• Customer should be able to pay different bills using this wallet.
• They should be able to connect bank account with this payment wallet and add money.
• Application should allow customers to check the balance, deposit money etc.

Features(How to Work Application)

• User Login authrntication
• validation for the account number
• validation for the current user and user identification
• RESTful API with CURD operations
• Functional Front End For better user experience

Modules:(Service Interface)

• Account Module
• Customer Module
• Bill Payment Module
• Transaction Module
• Beneficiary Module
• Bank Account Module

Class Design:

Pojo Classes:

• Customer
• BeneficiaryDetails
• BackAccount
• BillPayment
• Transaction

Application Desigen Method:--

• Entity Modules:
• DAO(Repository) Modules:
• Service Modules:
• Exceptions Modules:
• Controller:

------1.Entity Class Modules:------

• Login
• Coustomer
• Wallet
• BankAccount
• Transaction
• Transaction Type
• Bill Payment
• BeneficiaryDetails

------2. DAO(Repository) Modules------

• CoustomerDao
• CurrentUserSessionDao
• WalletDao
• BankAccountDao
• TransactionDao
• Bill PaymentDao
• BeneficiaryDetailsDao

------3. Service Modules(Class & Interface):-----

interface

• LoginService
• CoustomerService
• WalletService
• BankAccountService
• TransactionService
• Transaction Type Service
• Bill Payment Service
• BeneficiaryDetailsService

Class Modules

• LoginServiceImpl
• CoustomerServiceImpl
• WalletServiceImpl
• BankAccountServiceImpl
• TransactionServiceImpl
• Transaction Type ServiceImpl
• Bill Payment ServiceImpl
• BeneficiaryDetailsServiceImpl

-----4. Exceptions Modules:-----

• WalletNotFound
• CustomerException
• GlobalExceptionHandler
• BankAccountNotFound

------5.Controller Modules:------

• LoginController
• CoustomerController
• WalletController
• BankAccountController
• TransactionController
• Transaction Type Controller
• Bill Payment Controller
• BeneficiaryDetails Controller

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ER Diagram

The following Diagram depicts the flow of our Entity Relation Diagram to simplify the work flow.

Roles And Responsibilities

API Root Endpoint

https://localhost:8888/

https://localhost:8888/swagger-ui/#

Screenshots(Back-end Application UI)